April 2015 - Pharo-users - lists.pharo.org

Report about the D4D datathon challenge
by Serge Stinckwich April 10, 2015

April 10, 2015

Dear all, this is a small report about the RESILIENCE team using Pharo&Roassal for the D4D datathon challenge: http://www.d4d.orange.com/en/home The idea was to use mobile network data from Senegal provided by Orange company in order to solve some development problems. The amount of data provided by Orange was really huge, something like 66 Gb: we have the number and the durations of calls between each pairs of GSM antennas in Senegal (1666 different antennas) and also some information about the mobility of people. You can find more information about the data here: http://arxiv.org/abs/1407.4885 We try to extract some data from August 2013, because we know that some floods occurs at that time in Dakar. Our main objective was to to be able to visualise mobility and communications patterns with ROASSAL to see if there is any differences before and after the floods. We had a lot of problems to solve in a short period of time :-) At the beginning, we couldn't open huge files with Pharo. Only open a file that is around 3.4Go is impossible. Pharo says that the file does not exist. Thierry tells us that us that one must compile the VM with -D_FILE_OFFSET_BITS=64. (the Cog VMs are also built with -D_GNU_SOURCE). Why this is not done by default ? After that we decide to split the files in many smaller files and we try to use a mySQL database and various other tools but still have many troubles because of the size of the data ... At the end, we have done some visualisations but only on a tiny portion of the data on one day (one day is around 100Mb of data). You could find some visualisations done by our team here: https://twitter.com/sergestinckwich/status/586178094215606273 Managing huge amount in Pharo and also ROASSAL is still a challenge and we definitively need more tools in this area. We had some problems with ROASSAL: bugs with RTEdgesBuilder (Alvaro can you send a report to Alex about that ?), to much time to process some viz, ... At the end, our team receive the honorary price: https://twitter.com/sergestinckwich/status/585866625745887232 This is a brief description of our project. ========================================================= Project name: RESILIENCE Team members: ClÃ©mence Douard (ENSCI), Onil Goubier (CIRELA), Alvaro Peralta (LabU / Chile University), AurÃ©lie Thouron (ENSCI), Serge Stinckwich (IRD / UMMISCO) The main concern of this project is to improve resilience after an environmental crisis in a southern city. During the preparedness phase before crisis, records of inhabitants habits (like patterns of mobility or communications) are done in order to characterize the situation before the crisis. Assessments of the improvements will then be done by providing suitable visualizations of the resilience dynamic. The goal is to help citizens to represent these improvements and to take advantage of them in their daily lives. We took as an example the city of Dakar during the flooding that occurred in August 2013. The data used are those of the dataset 1 (communication between antennas) and 2 (user mobility) provided Orange. We use this information, coupled to OSM, and other data related to floods of August in Dakar to construct maps and indicators to show resilience. Visualizations are made with agile visualization platform Roassal: http://agilevisualization.com/ ========================================================= I would like to thank all the team members and also the people who help us remotely: Alexandre Bergel (ObjectProfile/Chile University) and Thierry Goubier (CEA) I would like to thank also the SIMPLON team and ORANGE for organizing such a nice event. Regards, -- Serge Stinckwich UCBN & UMI UMMISCO 209 (IRD/UPMC) Every DSL ends up being Smalltalk http://www.doesnotunderstand.org/

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String operations
by Peter UhnÃ¡k April 9, 2015

April 9, 2015

Hi, am I really blind, or is there no way to do something like 'BormParticipant' removePrefix: 'Borm' "-> 'Participant'" or 'BormParticipant' copyFrom: 5 "-> 'Participant'" "OrderedCollection knows this" I can do copyFrom:to:, but that requires asking the size of the string, which is (in my eyes) ugly. So is there better (=single message) way? Thanks, Peter

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CFP IWST 2015 - Deadline extension - 17th April
by jannik laval April 9, 2015

April 9, 2015

Please note that the deadline has been extended to the 17th April 2015 . [Please accept our apologies if you receive multiple copies of this call] [Please send to interested colleagues / mailing-lists] ************************************************************************************************************ CALL FOR PAPERS IWST15 â International Workshop on Smalltalk Technologies Brescia, Italy; July 15, 2015 http://www.esug.org/wiki/pier/Conferences/2015/International-Workshop-IWST_… ************************************************************************************************************ ------------------- Goals and scopes ------------------- The goals of the workshop is to create a forum around advances or experience in Smalltalk and to trigger discussions and exchanges of ideas. The topics of your paper can be on all aspect of Smalltalk, theoretical as well as practical. Participants are invited to submit research articles or industrial papers. This year we want to open two different tracks: one research track and one industrial track with less scientific constraints. We expect papers of three kinds: Short position papers describing emerging ideas Long research papers with deeper description of experiments and of research results. Industrial papers with presentation of real and innovative Smalltalk applications; this kind of paper should enlighten why Smalltalk is really appropriate for your application. We will not enforce any length restriction. -------------------- Important Dates -------------------- *Submission deadline: April 17th, 2015* Notification deadline: May 20th, 2015 Workshop : July 15th, 2015 All accepted papers will be published in ACM DL ------------------- Topics ------------------- We welcome contributions on all aspects, theoretical as well as practical, of Smalltalk related topics such as: -Aspect-oriented programming, -Design patterns, -Experience reports, -Frameworks, -Implementation, new dialects or languages implemented in Smalltalk, -Interaction with other languages, -Meta-programming and Meta-modeling, -Tools ------------------- Best Paper Award ------------------- To encourage the submission of high-quality papers, the IWST organizing committee is very proud to announce a Best Paper Award for this edition of IWST. We thank the Lam Research Corporation for its financial contribution which makes it possible for prizes for the three best papers: 1000 USD for first place, 600 USD for second place and 400 USD for third place. The ranking will be decided by the program committee during the review process. The awards will be given during the ESUG conference social event. The Best Paper Award will take place only with a minimum of six submissions. Notice also that to be eligible, a paper must be presented at the workshop by one of the author and that the presenting author must be registered at the ESUG conference. ------------------- Publication ------------------- Both submissions and final papers must be prepared using the ACM SIGPLAN 10 point format. Templates for Word and LaTeX are available at http://www.acm.org/sigs/sigplan/authorInformation.htm. This site also contains links to useful informations on how to write effective submissions. ------------------- Submission ------------------- All submissions must be sent via easychair: https://easychair.org/conferences/?conf=iwst2015 ------------------- Program chairs ------------------- Anne Etien (UniversitÃ© de Lille 1, France) Jannik Laval (Ecole des Mines de Douai, France) -- ~~Jannik Laval~~ Ãcole des Mines de Douai Enseignant-chercheur http://www.jannik-laval.eu http://www.phratch.com http://www.approchealpes.info http://car.mines-douai.fr/

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Devnology presentation slides
by Stephan Eggermont April 9, 2015

April 9, 2015

Yesterday, Diego and I presented Pharo at the Devnology meeting in Arnhem. http://www.slideshare.net/StephanEggermont/pharo-devnology20150401 Stephan

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GitHub Mirror Workflow
by Sean P. DeNigris April 9, 2015

April 9, 2015

Does anyone have a good workflow for mirroring a repo with GitHub? Do you just copy the MC version to a GitFileTree repo after every commit to e.g. SmalltalkHub? via the MC Browser UI? Thanks. ----- Cheers, Sean -- View this message in context: http://forum.world.st/GitHub-Mirror-Workflow-tp4810339.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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STON can't handle classes?
by Sean P. DeNigris April 9, 2015

April 9, 2015

"STON toStringPretty: Class" -> MessageNotUnderstood: Metaclass>>stonAllInstVarNames Is that a known limitation? Is there a workaround? Thanks. ----- Cheers, Sean -- View this message in context: http://forum.world.st/STON-can-t-handle-classes-tp4818547.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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GT: Pasting a PrintIt
by Sean P. DeNigris April 9, 2015

April 9, 2015

"cmd-p then [Enter]" copy/pastes the PrintIt into the underlying editor... Cool! I don't need it often, but that's very convenient. Thanks, Moose team :) ----- Cheers, Sean -- View this message in context: http://forum.world.st/GT-Pasting-a-PrintIt-tp4818537.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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class variable accessor naming
by Jan B. April 9, 2015

April 9, 2015

Hello Class variable names should start with capital letter (as I just found out), like RecentProjects. We have a getter to it. Should such accessor method be named recentProjects or RecentProjects? ... class#>>(r/R)ecentProjects ^ RecentProjects Jan -- View this message in context: http://forum.world.st/class-variable-accessor-naming-tp4818137.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Opening SettingBrowser on custom settings
by Laura Risani April 8, 2015

April 8, 2015

Hi all, Say that i wanted to open a SettingBrowser showing only the settings defined by 'SystemSystemSettings class >> systemSettingOn:' . How could i do that? There is a method 'SettingBrowser >> browse:' . Based on it's comment i tried adding to systemSettingOn: the pragma <banana>, and then sending ' SettingBrowser browse:#('banana') ' but it didn't work. Best, Laura

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Metacello GIT methodProperties.json
by Peter UhnÃ¡k April 8, 2015

April 8, 2015

Hi, are "methodProperties.json" files needed? Every time someone makes even small changes it is accompanied by ten times more json file changes which is a mess. So is it needed with git? Cannot the information be retrieved from git commits? Thanks, Peter

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